I found a site that has a project in work http://blog.copticscriptorium.org. The search engine is intimidating at first. But it appears to do have a interlinear reading function with grammar tags for several books of the new testament. Finding your way to the search engine is a little bit of challenge. Posting a link will not get you where you want to be since the cookies will not be set right when you arrive. Contrary to the documentation, Firefox isn't displaying correctly but Safari appears to be ok.